A4988 STEPPER MOTOR DRIVER

The A4988 is a micro-stepping driver for controlling bipolar stepper motors. It features adjustable current limiting, over-current protection, and five different micro-step resolutions (down to 1/16-step). This driver module is ideal for applications requiring precise and smooth control of stepper motors, such as 3D printers, CNC machines, and robotics.

Key Features of A4988 Stepper Motor Driver:

• • The A4988 driver module offers the following key features:
  • Microstepping: Supports full, half, quarter, eighth, and sixteenth step modes for smooth motion control.
  • Adjustable Current Control: Allows setting the maximum current output with a potentiometer for precise control and protection of the motor.
  • Over-Temperature Protection: Built-in thermal shutdown circuitry to prevent damage due to overheating.
  • Over-Current Protection: Protects the driver and motor from excessive current.
  • Cross-Current Protection: Prevents shoot-through by ensuring that the high-side and low-side MOSFETs are never on at the same time.
  • Small Form Factor: Compact size makes it easy to integrate into various projects.

Technical Specifications of A4988 Stepper Motor Driver:

• • Motor Supply Voltage (VMOT): 8V to 35V.
  • Logic Supply Voltage (VDD): 3.3V or 5V.
  • Current per Phase: Up to 2A (with sufficient cooling).
  • Microstepping Resolution: Full, 1/2, 1/4, 1/8, 1/16 steps.
  • Control Interface: STEP and DIR pins for step and direction control.
  • Operating Temperature: -20°C to +85°C.
  • Dimensions: 20mm x 15mm (L x W).

Mechanical Specifications of A4988 Stepper Motor Driver:

• • Package Type: Surface-mount (SMD).
  • Material: Plastic package with metal heat sink tabs.
  • Pins: 16-pin configuration for motor and logic connections.
  • Weight: Approximately 1 gram.

Schematic Diagram, Connection, Wiring, and Pinout of A4988 Stepper Motor Driver:

• • Pin Configuration:
    • VMOT: Motor power supply.
    • GND: Ground.
    • VDD: Logic power supply.
    • STEP: Step input.
    • DIR: Direction input.
    • ENABLE: Enable input (active low).
    • MS1, MS2, MS3: Microstepping mode selection pins.
    • RESET: Reset input (active low).
    • SLEEP: Sleep input (active low).
  • Connection: Connect VMOT to motor power, VDD to logic power, and the STEP and DIR pins to the controlling microcontroller or system.
  • Wiring: Ensure proper connections to avoid damage to the driver and motor.

Datasheet of A4988 Stepper Motor Driver:

• • For detailed technical specifications and electrical characteristics, refer to the A4988 datasheet.

Applications of A4988 Stepper Motor Driver:

• • 3D Printers: Provides precise control of stepper motors for accurate printing.
  • CNC Machines: Used in CNC machines for precise positioning and movement control.
  • Robotics: Ideal for controlling stepper motors in robotic arms and other mechanisms.
  • Automation Systems: Suitable for various automated systems requiring stepper motor control.
  • DIY Projects: Popular choice for hobbyists building custom machinery and devices.

Equivalent of A4988 Stepper Motor Driver:

• • DRV8825: Similar driver with higher current capability and microstepping resolution.
  • TMC2208: Advanced stepper motor driver with quiet operation and higher precision.

Keywords for A4988 Stepper Motor Driver:

• • A4988 Stepper Driver
  • Microstepping Driver
  • Bipolar Stepper Motor Driver
  • Stepper Motor Controller
  • 3D Printer Stepper Driver

Package Includes:

• • 1 x A4988 Stepper Motor Driver Module